{
  "abstract": "In order to reveal the evolution characteristics and microdynamic mechanism of the reignition behavior of Shajihai coal at different preoxidation temperatures, this paper systematically studied the differences in the spontaneous-combustion characteristics of Shajihai coal at different preoxidation temperatures (40, 70, 100, 130, 160 °C) by means of temperature-programmed experiments, simultaneous thermal analysis (TG-DSC), in situ Fourier transform infrared spectroscopy (FTIR), and other experimental methods. The results show that the preoxidation temperature has a nonlinear regulation effect on the spontaneous-combustion tendency of Shajihai coal. In the high temperature stage (>160 °C), the release of CO and CO2 increased by 16% and 9.7%, respectively, compared with the raw coal, indicating that its oxidation activity was the strongest. However, the oxidation activity of preoxidized coal at 130–160 °C was inhibited due to the consumption of active groups caused by high-temperature pyrolysis, and the most prominent passivation effect occurs at 160 °C. FTIR analysis showed that the oxygen-containing functional groups (−OH, C═O) of the preoxidized 100 °C coal sample were slightly reduced by 3%–9.6% compared with the raw coal, and the aliphatic hydrocarbon content was increased by 33%–42% compared with the raw coal. The conversion rate of functional groups in the high temperature stage (230–300 °C) was accelerated, which further aggravated the chain reaction. This study realizes the coupling interpretation of macroscopic reignition performance and microscopic molecular evolution by combining programmed-temperature gas test, TG-DSC, and in situ FTIR measurements.",
  "abstract_shown": true,
  "affiliations": [
    "Shandong University of Science and Technology , , ,",
    "Xinwen Mining Group , ,"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 6,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Weimin Cheng"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Xiaoping Li",
      "orcid": "0009-0003-6311-2050"
    },
    {
      "affs": [
        0
      ],
      "name": "Hao Liu"
    },
    {
      "affs": [
        0
      ],
      "name": "Gang Wang",
      "orcid": "0000-0003-4742-8103"
    },
    {
      "affs": [
        0
      ],
      "name": "Cong Li"
    },
    {
      "affs": [
        0
      ],
      "name": "Xinxue Liu"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/60v6rbxq12skk.bib",
  "cited_by": 0,
  "doi": "10.1021/acsomega.6c09074",
  "fulltext_url": null,
  "id": "60v6rbxq12skk",
  "issns": [
    "2470-1343"
  ],
  "landing_url": "https://pubs.acs.org/acsodf/article/doi/10.1021/acsomega.6c09074/5458730/Reignition-Behavior-Evolution-and-Microscopic",
  "language": null,
  "licence": "CC-BY-NC-ND-4.0",
  "licence_label": "CC BY-NC-ND 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by-nc-nd/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "2212|Coal Properties and Utilization"
    ]
  ],
  "openalex": "W7223963441",
  "pdf_url": "https://pubs.acs.org/doi/pdf/10.1021/acsomega.6c09074",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-27",
  "publisher": "American Chemical Society (ACS)",
  "ris": "https://research.draconitic.com/paper/60v6rbxq12skk.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:40Z",
      "native_id": "10.1021/acsomega.6c09074",
      "source": "crossref",
      "url": "https://pubs.acs.org/acsodf/article/doi/10.1021/acsomega.6c09074/5458730/Reignition-Behavior-Evolution-and-Microscopic"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "issn:2470-1343",
      "subfield": "general"
    }
  ],
  "title": "Reignition Behavior Evolution and Microscopic Kinetic Mechanism of Lignite at Various Preoxidation Temperatures",
  "title_text": "Reignition Behavior Evolution and Microscopic Kinetic Mechanism of Lignite at Various Preoxidation Temperatures",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:18:40Z",
  "url": "https://research.draconitic.com/paper/60v6rbxq12skk",
  "venue": "ACS Omega",
  "versions": []
}